Refactor overlay fullscreen video handling into a single callback

third_party/WebKit/Source/web/ChromeClientImpl.cpp

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
@@ skipping 841 matching lines @@
 }
 
 void ChromeClientImpl::enterFullscreenForElement(Element* element) {
   m_webView->enterFullscreenForElement(element);
 }
 
 void ChromeClientImpl::exitFullscreen(LocalFrame* frame) {
   m_webView->exitFullscreen(frame);
 }
 
+void ChromeClientImpl::fullscreenElementChanged(Element* fromElement,
+                                                Element* toElement) {
+  m_webView->fullscreenElementChanged(fromElement, toElement);
+}
+
 void ChromeClientImpl::clearCompositedSelection(LocalFrame* frame) {
   LocalFrame* localRoot = frame->localFrameRoot();
   auto client =
       WebLocalFrameImpl::fromFrame(localRoot)->frameWidget()->client();
   if (!client)
     return;
 
   auto layerTreeView = client->layerTreeView();
   if (layerTreeView)
     layerTreeView->clearSelection();
@@ skipping 293 matching lines @@
   if (RuntimeEnabledFeatures::presentationEnabled())
     PresentationController::provideTo(frame, client->presentationClient());
   if (RuntimeEnabledFeatures::audioOutputDevicesEnabled())
     provideAudioOutputDeviceClientTo(frame,
                                      AudioOutputDeviceClientImpl::create());
   if (RuntimeEnabledFeatures::installedAppEnabled())
     InstalledAppController::provideTo(frame, client->installedAppClient());
 }
 
 }  // namespace blink